Air-pump.



No. 885,301. PTENTBD APR. 21, .19.08.

J. W. SIEPERMANN 6;' E. FUDIGKAR. l

AIR PUMP.

APPLICATION FILED AUG. Z7. 1904.

immun x i mm1 JOHANN WILHELM SIEPERMANN AND EMIL FUDIGKAR, OF ELBERFELD, GERMANY.

AIR-PUMP.

Specification of Letters Patent.

Patented April 21, 190s.

Application filed VAugust 27, 1904. Serial No. 222,400.

Toalljwhom'itumay concern: 4

Be 1t known that we, JOHANN VILHELM vSIEPERMANN and EMIL FUDICKAR, citizens of l'the German Empire, residing at Elberfeld, in

the Province of Rhenish Prussia and Kingj dom of Prussia`,fGermany, have invented certam new and useful `Improvements in Air,-

the footl of the said fall pipe.

the `fall pipe should be small enough to main- Pumps, of which the following is a specificationand compression pump.

0n the accompanying drawing Figure 1 shows the new pump constructed to operate as lan air compressor, Fig. 2 shows a construction lof the pump capable of distilling spirits un- 'der`a vacuum with a view to saving aromatic products, the condensed fluid forming the operating liquid in this instance.

1 indicates the piston or fall pipe, of suitable diameter, and'2 is the dischar e vessel at The iameter of tain an integral li uid piston, by bringinfr the operation within t e limits of cohesion o watel'.` The discharge vessel 2 is closed, having 'only an outlet pipe 9, at the to which pipe ie leads to another vessel, not s own in t drawing, lin whichvessel air to be stored and compressed. l

3 is the head or' suction chamber of the pump', and 5 the feed or admission pipe leadlng the operating liquidinto the suction 4The level-of the liquid in the chamber 3 will chamber 3. The fall pipe 1 enters the latter at its .bottom and is extended therein a little above theopen'end of the admission pipe 5.

be always a little above the upper end of the pipe 1, so that the liquid will flow equally over the circumferential edgeand toward the center of this pipe and seal it at the top.

` The liquid, which for instance may be water,

forms what we call a wat-er piston in the pipe.

' `By the law of gravity this water piston sinks downwards in the pipe with accelerated velocity. The result is that as su'ilicient water cannot follow, the piston will be broken or .ferred to.-

enough, so that the torn off water piston will not have reached the outlet of the pipe at the bottom thereof, before the top end of the pipe has been closed again by an additional quantity of water flowing into the'pipe. This i may be regulated at will by regulating the amount of the water, admitted tlluough pipe 5. .Thus alternately an air and a waterlpiston is formed in the ipe 1, as shown in 4ig.

1, and it will be rea( ily understood that the Vtop of the vessel and pass out through the pipe 9 into. the storage chamber above re- The compression takes place progressively in the lower portion of the fall pipe, after the previously accelerated movement of each liquid. piston has begun to be retarded by the arrest of those below it as they pass from the lower end of the fall pipe into the stationary body of liquid in the vessel 2; The water flows out through a ipe 10, which, as shown, is provided with a oat valve 11, the position of which -is controlled by the float 12. In order to relieve the valve 11 of the pressure which would otherwise be exerted upon it by the compressed air in the chamber 2, so that it maybe readily actuated by the float,k the stem is provided with a second piston 13, working freely, but forming a liquid-tight t in the tube 14, which is o en at its u per end 15 to the atmosphere. he air disc arged through the pipe 9 will gradually be compressed in said storage chamber to a degree proportionate to the head of the water in the pipe 1. This compression will be carried on with absolute' certainty and without any loss, because no air can escape.'

The device shown in Fig. 2 may be used for distilling spiritsunder a vacuumwith a view to saving aromatic products. The distilled fluid in this case, forms' itself the o erating liquid ,for producing alternately iquid and gaseous pistons'.` The gas in this caseis the aromatic gas emanating from thel distilled product, or at least such gas mixed with air. The liquid flows also into the closed vessel 2"* at the bottom of the fall pipe 1, but instead of being allowed to flow away, it is forced back by a pump 5u through a pipe 5b into the suction chamber 3, wherein it is first admitted from the still by a pipe 6. A pipe coil 8 containing a cooling 'lu1d,.is arranged in the -suction chamber. From time to time, however, the liquid collected in the vessel 2u is allowed to escape through the i pipe of relatively small diameter extending ties of liquid to s'aid receptacle, a vertical constructed and arranged to form descendseaaoi float valve 11a, and is conveyed to a cask or some' storage vessel through a pipev 10a. The valve 11a is controlled by the float 12a. Both pumps shown inFigs. 1 and 2 operate alike, the only difference being that in the pump illustrated in Fig. 2 the liquid, being more valuablethan water, is not permitted to flow away, but'is pumped back again into the suction chamber to serve anew as an operating piston.

What we. claim and desiregto secure by Letters Patent isz,- l

Il. A pump comprising an elevated receptacle, means for supplying regulated quantities of liquid'to ,said receptacle, a vertical upwardly throughfthe bottom of said receptacle and terminating within it, a closed vessel surrounding ,the lower end of said pipe; said receptacle, pipe and vessel being ing alternate pistons of liquid and gas in the pipe when liquid is supplied to the receptacle;l and means for intermittently discharging the liquid from said close'dvessel; substantially as described.

2. A pump comprising an elevated receptacle, 'means for supplying regulated quantipipe of relatively small diameter extending upwardlythrough the bottom of said receptacle and terminating within it, a closed 4vessel surrounding the lower end of said pipe, said receptacle, pipeand vessel being constructed and arranged to form descending alternate pistons of liquid and gas in the pipe when liquid is supplied to the receptacle, means for dischargingthe compressed gas from said closed vessel, and a balanced valve for intermittently discharging the liquid 4 0*- thererom; substantially as described.

3, A pump comprising an elevated recep-l tacle, means for admittingli uid thereto; -a'

vertical pipe of relatively sma l diameter eX- tending upwardly-through the bottom of said receptacle and terminating within it, a closed vessel surrounding the lower end of said pipe, means for discharging' compressed gas and a portion of the accumulated liquid from said closed vessel, and means for 

